Changing wording of footer

Hi, I am new to stylesheets and have just signed up for the custom design upgrade. I have a website rather than a blog, in Yoko theme, and really want to change the footer from "blog at wordpress" to "powered by wordpress".
I have been through lots of forums and still don't understand if its possible for me to do this, or how.
I'd appreciate any help.
many thanks
my website is http://www.devonhealing.com

have just seen other people asking similar questions, and the answers they got. if I can't remove the word "blog" which i would really like to, is it possible to add other words or change the appearance, to make it look more professional as a website? many thanks

I'm glad you asked! If changing the text is important to people and they continue to ask about it in the forums, that is helpful to know and I'm working to keep track of the feedback. There are no immediate plans to change the wording, but we have been doing some testing with different text in the footer and test results plus user feedback will be some of the things we look at if we make a change. For now, there is not a way to change "Blog" to something else, but there is a way to add text such as a copyright notice.

? I've been against hiding the credits long before you thought about it. I didn't suggest hiding them, I suggested replacing them with equivalent ones, just to change the wording (to, say, "Site at" instead of "Blog at").

Replacing the links is not okay. They are now dynamic and change when a site is customized. If the links are replaced manually, then they won't get updated if we need to make changes to them later or changes based on the customization status of each site.

Just changing the word "Blog" to "Site" or "Website" would be okay if you can find a way to do that.

[EDIT: To clarify the statement above, the WordPress.com Terms of Service have been modified to say "Footer credits and the WordPress.com toolbar may not be altered or removed regardless of upgrades purchased." That means altering the wording in footer credits is not supported. Part of the reasoning for this is that WordPress.com reserves the right to change the text in the credits as needed (i.e. sometimes we may need to add links to font attribution or something else or we may decide to change "Blog at WordPress.com" to say something slightly different) and if you modified the wording, it would be subject to change and it would most likely break any wording modifications you added via CSS.]

Yes, I think that's also possible: you can write the word in a text widget, style it exactly like the word you want to replace, give it a white bg color, and position it in front of the original word (also move the original credits horizontally, if the two words aren't the same length).